Sheet-metal roofing-plate.



H. E. MOOMAW.

SHEET MBTAL-ROOLING PLATE. APPLICATION FILED OUT. 28, 1911.

1,021,844. I Patented Apr. 2, 1912.

H'ENRY E. MOOMAW, or SALEM, VIRGINIA.

' SHEET-METAL RooFIne-rmrn.

I Specification of Letters Patent.

Patented Apr. 2, 1912.

Application filed October 28, 1911. Serial No. 657,264.

To all 'whom it may concern;

Be it. known that I, HENRrE. MooMAw, a citizen of the United Stateso'f America,

and a resident. of Salem, county of Roanoke,

State of Virginia, have invented certain new and useful Improvements in Sheet-- Metal 'Roofing-P1ates, -of, which the follow- .ing "is a fulland clear specification, reference being had Atothe accompanying d I}? ings, in which--;

Figure 1 is a perspective view of portions ot a pair of'ronfingplates constructed and connected in accordance with my-invention;

Fig. 2 a vertical transverse sectionalview showing the manner .of interlocking adjacent plates; and .Figs. 3 and-A detail perspective Views showing the application of my invention to two different designs of roofing plates. 1

-This invention has relation to that type.

of sheet metal roofing covered by my former Patent No. 884,285,. dated Apr. 7, 1908, in

which is shown and covered a sheetmetal. roofing plate havingan upstanding ridge parallel with and a short distance from one edge and another similarly shaped and di-. mensioned ridge parallel with anda short distance from its other edge, the part of the."

plateoutside of this latter ridge serving as a nailing flange, a longitudinal pocket-like channel; being formed inside of and adjacent same and being less in, height thanithe same, whereby the longitudinal edges of a series of such plates may be overlapped andinter to this latter ridge and opening toward the locked and the ridges ofeach pair ofladjacent plates fit closely upon each other their entire length to ,form a; reinforced upstand lng ridge, Since the grant of this patent 4L0 this type of sheet metal roofing has been extensively manufactured and used and while it has proven. of great practical and commercial value experience has'shown that points bet-Weenthe ridges and exerts such apowerful pull on..-the plates as-to draw' occasionally ahigh wind willwork under the {roof'amd bulge'upw'ardly the plat'es at their} edges out" of the channels and thus nectionof the plates, the construction"being 'suc'h that when-the plates are'once interlocked'and nailed downit will be practi-.

-"callyimpossible to dislodge or disconnect them without first removing the nails in the free one edge of 'the plate. My present, improvement is designed to so construct the interlocking joint as to prevent this disconnailing flanges. This improvement will be best. understood if it be kept in mind that this type of roofing plates is made insizes very much larger than the well known metal shingles on the market, this type of roofing plate being designed to take the place of these comparatively small shingles.

In the drawing a designates the main part of the plate, 6 the nailing flange formed along. one of the longitudinal edges of the plate, c the upstanding inverted V or U-shaped ridge formed adjacent to the nail.-

in flange, d the second similarly shaped ge extending along the plate near. the

opposite edge thereof. To this extent the plate is constructed similarly to the plate in ridge. cl is folded vdownwardly and back Wardly upon itself to form a longitudinal and opens'toward the adjacent ridge 0!.

It will be observed that when the edges of, the sheets thus constructed are overlapped and interlockedin the manner illustrated,

theridge-(Z fits closely down upon the ridge channel g which'lies underneath the plate c and thus reinforce each other, while the V folded rib e fits into the channel 9 and thus locks the free e go of. the sheet to the previ'ou'sly. nailed plate. that by this interlocking.arrangement It 'will be impossible to disconnect the plates by bulging them upwardly, so that high winds can have no effect upon the plates. It "will he observed also that the proportions of the .parts are such that when the edge of the It will be observed 'sheetis started into the channel f the inner .wallwof the'ridged will just engage over the apex of the ridge 0," whereby when the -upper-plate .is swung downwardly the inclination of the contacting walls of the ridges and the upward inclination of the longitudinal rib ewill cause the plate t o automatioally seat itself in its locked position,

in which position the walls of the channel 9 c.

closely v hug the rib candy the walls of the upper ridge closely hug the under ridge 0,-

thus making a firm and very'rigid seam.

It will be observed that all the plates will be securely locked together and will form in their entirety a structural unit and each plate will be required to be fastened at but one edge; A feature of im ortance'lies in the fact that all the nails will be covered in the completed roof thereby avoiding leakage at the nail-holes. Also it will be observed that the seams are absolutely Watertight at all points there being no uncovered "raw edges at either side of the seams to peravoid the use of all separate fastening clips.

The construction admits ofthe ridge being closed to form a more rigid upstanding seam, these being perhaps desirable in some cases where a more rigid ridge is of advantage. This ridge may be closed up during the process of laying the roof, before the plate is nailed, by simply squeezing it with 'a pair of ordinary tinners tongs.

It will be observed that the upstanding.

ridges are practically the same height and are both higher than the lock fold and that the lock fold opens away from the adjacent ridge. This construction causes the upstanding adjacent wall of the ridge to wedge or force the lock flange into the lock fold throughout its length so that the laying of the sheets'will be an easy matter even with unskilled labor and the sheets will and in fact must always be laid properly.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent, is

A sheet metal roofing plate having an upstanding ridge extending along near one of its longitudinal edges a portion of the plate outside of this-ridge being folded under to form a hook-like pocket opening toward the adjacent ridge, a second ridge similarly dimensioned and shaped being formed along the plate near its other longitudinal edge, the portion of the plate outside of this latter ridge forming a nailing flange, and a longitudinal rib 6 being formed at the junction of the plate and the base of the last named ridge on the side opposite the nailing flange, this rib being formed by folding the plate and being extended in an inclined direction upwardly and away from the ridge so as to form an inclined pocket or channel between itself and the face of the plate said ridges being higher than the rib e.

In testimony whereof I hereunto afiix my signature in the presence of two witnesses. HENRY E. MOOMAW.

Witnesses: M

F. H. CHALMERs, J N0. R; KEIsTER. 

